"I have been very fortunate in life both professionally and personally," she wrote. "The one true hurdle I've faced in life is that I have a broken belly. After years of trying to get pregnant, exploring the range of fertility treatments, all unsuccessful, our journey led us to gestational surrogacy: we make a 'baby cake' and bake it in another woman's 'oven.' "

She goes on to say that the experience garnered not just one, but "two miracles."

"The first was meeting our carrier and her husband who were truly humbling in their decency and generosity," Banks pointed out. "And the second miracle was the birth of our baby boy, Felix Handelman. Felix means 'happy' and 'lucky' in Latin. And true to his name, Felix is a very happy baby and a blessing on our life."

Banks also took to her Twitter account where she continued to express her happiness.